document.write( "Question 752165: Find all unknown sides and angles of triangle PQR if ANGLE P is 42 and PQ:21 cm and QR:17.3 cm? \n" ); document.write( "
Algebra.Com's Answer #457617 by kibauu(44)\"\" \"About 
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you can use sinus formula
\n" ); document.write( "\"a%2FsinA+=+b%2FsinB+=+c%2FsinC\"\r
\n" ); document.write( "\n" ); document.write( "let a=21, b=17,3 and \n" ); document.write( "\"21%2Fsin+A+=+17.3%2Fsin+42\"
\n" ); document.write( "after you find out sin A, calculate the other angle or we call it \n" ); document.write( "you could find the unknown sides too with sinus formula
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